Abstract: Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party.

Abstract: A direct telephone dialing ordering system and method is disclosed wherein a calling customer can order products and/or services from a given vendor without voice interchange. The system operates in a local Access and Transport Area (LATA) switching network which has Feature Group D services utilizing a predetermined dialing plan. The system is positioned within the LATA and is assigned a Feature Group D interexchange carrier number. In accordance with the dialing plan of the Feature Group D service, certain digits of the originating call are utilized to direct the call to the system within the LATA to a point of termination wherein the system appears as an interexchange carrier. The system is then free to utilize the remaining digits of the originating call for determination of variables such as vendor, product, grade and the like designations.

Abstract: A direct telephone dialing ordering system is disclosed wherein a calling customer can order products and/or services from a given vendor without voice interchange. The system operates in a Local Access and Transport Area (LATA) switching network which has Feature Group D services utilizing the 15 digit domestic dialing plan. The system is positioned within the LATA and is assigned a Feature Group D interexchange carrier number. An originating call utilizing the 15 digit domestic dialing plan of the Feature Group D service is directed to the system within the LATA to a point of termination as an interexchange carrier. The system is then free to utilize the remaining 10 digits of the originating call for determination of variables such as vendor, product, grade and the like designations. The Feature Group D Automatic Number Identification (ANI) for the calling customer is likewise passed on to the system for customer identification, credit verification and the like.